Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the γγ jj final state in pp collisions at √s = 13 TeV with the ATLAS detector

The ATLAS collaboration

doi:10.1016/j.physletb.2018.06.011

Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the γγ jj final state in pp collisions at √s = 13 TeV with the ATLAS detector

The ATLAS collaboration

Mohamed I University
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University of Oklahoma
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Université Paris-Saclay
University of Toronto
University of California at Santa Cruz
University of Sussex
Tel Aviv University
Technion-Israel Institute of Technology
Argonne National Laboratory
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
King's College London
The University of Tokyo
AGH University of Science and Technology
Northern Illinois University
Ludwig Maximilian University of Munich
Rutherford Appleton Laboratory
Alexandru Ioan Cuza University of Iaşi
Laboratório de Instrumentação e Física Experimental de Partículas
University of Granada
Joint Institute for Nuclear Research
University of Rome Tor Vergata
Kyoto University
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RAS - P.N. Lebedev Physics Institute
University of Bologna
University of Victoria BC
Universidad Nacional de La Plata
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Horia Hulubei National Institute of Physics and Nuclear Engineering
National Technical University of Athens
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Council for Scientific and Industrial Research
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High Energy Accelerator Research Organization, Tsukuba
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Duke University
Royal Holloway University of London
University of Montreal
University of Iowa
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University of Cambridge
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Alikhanov Institute for Theoretical and Experimental Physics
Johannes Gutenberg University Mainz
German Electron Synchrotron
United States Department of Energy
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University of Cape Town
University of Illinois
University of Siegen
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CAS - Institute of High Energy Physics
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Yale University
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University of Wisconsin-Madison
University of Louisville
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University of Innsbruck
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Russian Research Centre Kurchatov Institute
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Ohio State University
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Uppsala University
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Humboldt University of Berlin
University of Pisa
Technische Universität Dresden
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Pontificia Universidad Católica de Chile
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Institute for High Energy Physics
Chinese University of Hong Kong
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Tokyo Metropolitan University
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Southern Methodist University
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Nagasaki Institute of Applied Science
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West University of Timisoara
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Istanbul Aydin University
Hellenic Open University
Hong Kong University of Science and Technology
University of Sydney
The University of Hong Kong
Universidad Antonio Nariño
California State University Sacramento
Moscow Institute of Physics and Technology
Hiroshima Institute of Technology
Okayama University
University of Minho
Jagiellonian University in Kraków
National Institute for Research and Development of Isotopic and Molecular Technologies
IN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
Sun Yat-Sen University
Bulgarian Academy of Sciences
TOBB University of Economics and Technology
Kyoto University of Education
Stanford University
Wigner Research Centre for Physics
Transilvania University of Brasov
Giresun Universitesi
University of Malaya

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48 Citations (Scopus)

Abstract

This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb⁻¹. The data are in agreement with the Standard Model predictions and an upper limit at the 95% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.

Original language	English
Pages (from-to)	750-767
Number of pages	18
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	782
DOIs	https://doi.org/10.1016/j.physletb.2018.06.011
Publication status	Published - 10 Jul 2018

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2018.06.011

Cite this

@article{9e4dd1190e9f4859ad70eb19ecbd03c5,

title = "Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the γγ jj final state in pp collisions at √s = 13 TeV with the ATLAS detector",

abstract = "This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb−1. The data are in agreement with the Standard Model predictions and an upper limit at the 95\% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.",

author = "\{The ATLAS collaboration\} and M. Aaboud and G. Aad and B. Abbott and O. Abdinov and B. Abeloos and Abidi, \{S. H.\} and AbouZeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and S. Adachi and L. Adamczyk and J. Adelman and M. Adersberger and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and F. Ahmadov and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and P. Albicocco and \{Alconada Verzini\}, \{M. J.\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and T. Alexopoulos and M. Alhroob and B. Ali and M. Aliev and G. Alimonti and J. Alison and Alkire, \{S. P.\} and C. Allaire and Allbrooke, \{B. M.M.\} and Allen, \{B. W.\} and Allport, \{P. P.\} and Connell, \{S. H.\} and N. Govender and L. Truong",

note = "Publisher Copyright: {\textcopyright} 2018 The Author",

year = "2018",

month = jul,

day = "10",

doi = "10.1016/j.physletb.2018.06.011",

language = "English",

volume = "782",

pages = "750--767",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the γγ jj final state in pp collisions at √s = 13 TeV with the ATLAS detector. / The ATLAS collaboration.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 782, 10.07.2018, p. 750-767.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the γγ jj final state in pp collisions at √s = 13 TeV with the ATLAS detector

AU - The ATLAS collaboration

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdinov, O.

AU - Abeloos, B.

AU - Abidi, S. H.

AU - AbouZeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adachi, S.

AU - Adamczyk, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Alconada Verzini, M. J.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Ali, B.

AU - Aliev, M.

AU - Alimonti, G.

AU - Alison, J.

AU - Alkire, S. P.

AU - Allaire, C.

AU - Allbrooke, B. M.M.

AU - Allen, B. W.

AU - Allport, P. P.

AU - Connell, S. H.

AU - Govender, N.

AU - Truong, L.

PY - 2018/7/10

Y1 - 2018/7/10

N2 - This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb−1. The data are in agreement with the Standard Model predictions and an upper limit at the 95% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.

AB - This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb−1. The data are in agreement with the Standard Model predictions and an upper limit at the 95% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.

UR - https://www.scopus.com/pages/publications/85048839537

U2 - 10.1016/j.physletb.2018.06.011

DO - 10.1016/j.physletb.2018.06.011

M3 - Article

AN - SCOPUS:85048839537

SN - 0370-2693

VL - 782

SP - 750

EP - 767

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the γγ jj final state in pp collisions at √s = 13 TeV with the ATLAS detector

Abstract

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